男性，40岁，体检抗HEV-IgM阳性，无任何症状、体征，肝功能正常，考虑（） A. 发布时间：2019-02-10 20:55 │ 来源：www.tikuol.com 题型：单项选择题 问题： 男性，40岁，体检抗HEV-IgM阳性，无任何症状、体征，肝功能正常，考虑（）A.潜伏性感染B.病原携带状态C.显性感染D.隐性感染E.既往感染
题型：单项选择题 阅读理解。 As we know, there are differences between Western culture and Chinese culture. We can seedifferences when we pay attention to the way some words are used. Let's look at the words about animals and ants. Although dogs are thought to be honest and good friends of humans,most expressions in Chinese about the dog, for example, "a homeless dog", "a running dog" and "a dog catching a mouse", have negative meanings. But in Western countries, people use "dog" to describe positive actions. In English,for example, "You are a lucky dog" means "You are a lucky person". And "Every dog has its day" means"Each person has good luck sometimes". However. Chinese love cats very much. But in Western culture"cat" is often used to describe a woman who is cruel (冷的). There are many other examples of how "cat" is used differently as well. The rose is regarded (视为) as a symbol (象征) of love in both China and some Western countries.People think the rose stands for (代表) love, peace, courage and friendship. And the rose is the nationalflower of England,America and many other countries. The words about animals and plants are used in positive or negative ways in different cultures. We can learn about many differences in different cultures by comparing how some words are used.1．The word "dog" in Chinese usually _______. [ ]A．stands for peace B．stands for good luck C．has a negative meaning D．has a positive meaning 2．"Every dog has its day " means "_______". [ ]A．Everybody in the world is lucky B．Each person has his own way of life C．If one works hard,he's sure to succeed D．Everybody has a time in life to be lucky 3．Western people usually use "cat" to refer to "_______". [ ]A．a tired person B．a brave man C．a homeless person D．an unkind woman 4．Which of the following is TRUE according to the passage? [ ]A．"A lucky dog" means "a lucky person" in Western countries.B．Chinese people prefer dogs to cats.C．Western people consider cats to be good friends. D．The rose is the national flower of all the Western countries. 5．What does the writer talk about in the passage? [ ]A．Some words have both negative and positive meanings. B．Different countries have different cultures. C．The rose means the same in Chinese culture and Western culture.D．Western culture and Chinese culture have a lot in common. 查看答案
题型：单项选择题 除哪一项外均为绵马贯众性状鉴别特征（）A、倒圆锥形而稍弯曲B、外表黄棕色至黑棕色C、有稀疏的叶柄残基及鳞片D、叶柄断面有黄白色小点状维管束5-13个环列E、气特殊，味初微涩，渐苦而辛 查看答案